Petiole to 6 cm, densely pale brown woolly; leaf blade adaxially gray to brown pubescent and villous, abaxially sparsely gray-brown pubescent, brown villous along veins, base sometimes oblique, cuneate to subcordate, margin crenate-serrate. Cymes 3-8-flowered. Corolla ca. 1.6 cm; tube 0.9-1.1 cm. Capsule 3.5-4 cm. Fl. and fr. Oct.

* Rocks in forests. Hainan (Ding'an Xian).